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        console.log("(TIME) index.html loaded:\t", indexLoadedTime);
        // XXX the code below listeners for errors and displays an error message
        // in the document body when any of the required files fails to load.
        // The intention is to prevent from displaying broken page.
        var criticalFiles = [
            "config.js",
            "utils.js",
            "do_external_connect.js",
            "interface_config.js",
            "logging_config.js",
            "lib-jitsi-meet.min.js",
            "app.bundle.min.js",
            "all.css"
        ];
        var loadErrHandler = function(e) {
            var target = e.target;
            // Error on <script> and <link>(CSS)
            // <script> will have .src and <link> .href
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                window.onload = function() {
                    // The whole complex part below implements page reloads with
                    // "exponential backoff". The retry attempt is passes as
                    // "rCounter" query parameter
                    var href = window.location.href;

                    var retryMatch = href.match(/.+(\?|&)rCounter=(\d+)/);
                    var retryCountStr = retryMatch ? retryMatch[2] : "0";
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                        delay = 10000;

                    var showMoreText = "show more";
                    var showLessText = "show less";

                    document.body.innerHTML
                        = "<div style='"
                        + "position: absolute;top: 50%;left: 50%;"
                        + "text-align: center;"
                        + "font-size: medium;"
                        + "font-weight: 400;"
                        + "transform: translate(-50%, -50%)'>"
                        + "Uh oh! We couldn't fully download everything we needed :("
                        + "<br/> "
                        + "We will try again shortly. In the mean time, check for problems with your Internet connection!"
                        + "<br/><br/> "
                        + "<div id='moreInfo' style='"
                        + "display: none;'>" + "Missing " + fileRef
                        + "<br/><br/></div>"
                        + "<a id='showMore' style='"
                        + "text-decoration: underline;"
                        + "font-size:small;"
                        + "cursor: pointer'>" + showMoreText + "</a>"
                        + "&nbsp;&nbsp;&nbsp;"
                        + "<a href='" + href + "' style='"
                        + "text-decoration: underline;"
                        + "font-size:small;"
                        + "'>reload now</a>"
                        + "</div>";

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                                    "display: block;"
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                                moreInfoElem.setAttribute(
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                    window.setTimeout(
                        function () { window.location.replace(href); }, delay);

                    // Call extra handler if defined.
                    if (typeof postLoadErrorHandler === "function") {
                        postLoadErrorHandler(fileRef);
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                };
                window.removeEventListener(
                    'error', loadErrHandler, true /* capture phase */);
            }
        };
        window.addEventListener(
            'error', loadErrHandler, true /* capture phase type of listener */);
    </script>
    <script><!--#include virtual="/config.js" --></script><!-- adapt to your needs, i.e. set hosts and bosh path -->
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    <script><!--#include virtual="/interface_config.js" --></script>
    <script><!--#include virtual="/logging_config.js" --></script>
    <script src="libs/lib-jitsi-meet.min.js?v=139"></script>
    <script src="libs/app.bundle.min.js?v=139"></script>
    <!--#include virtual="title.html" -->
    <!--#include virtual="plugin.head.html" -->
    <!--#include virtual="static/welcomePageAdditionalContent.html" -->
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